How are non-vertical slices generated when using Sarmas method?

method sarma slices
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How are non-vertical slices generated when using Sarmas method?

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GALENA will normally generate slice boundaries for Sarma analyses automatically, and will put a slice boundary at every point where there is a change in either the slope surface or the failure surface. These slice boundaries will be approximately at right angles to the failure surface and the failure plane. GALENA also allows one or more slice boundaries to be user-defined at (almost) any orientation, and allows you to specify material properties for each user-defined slice boundary. For example, two slice boundaries may be user-defined – GALENA automatically includes other slice boundaries, as necessary. The automatic slice boundaries would be sub-parallel to the two user-defined slice boundaries. The strength assigned to automatic slice boundaries is calculated from the materials the slice boundary passes through. In this way, a fault can be given lower material properties by using a user-defined slice, and the automatically generated slice boundaries either side of the fault would h

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